Hello Mailing-list,

I remember we discussed enhanced existentials heavily during the Swift 3 
timeframe but postponed it. I was wondering if we need to bring back for 
discussion during Phase 1 or Phase 2? For reference, here is the proposal which 
Austin Zhend wrote which represented the culmination of the discussions:

https://github.com/austinzheng/swift-evolution/blob/az-existentials/proposals/XXXX-enhanced-existentials.md#nested-typealias-existential
 
<https://github.com/austinzheng/swift-evolution/blob/az-existentials/proposals/XXXX-enhanced-existentials.md#nested-typealias-existential>

Regards,
David.
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